20556417

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{811}}^1$

素因数の和:909

約数の個数: 32

約数和(自身を含む): 33675264

約数和(自身を除く): 13118847

約数列:

[1, 3, 7, 17, 21, 51, 71, 119, 213, 357, 497, 811, 1207, 1491, 2433, 3621, 5677, 8449, 13787, 17031, 25347, 41361, 57581, 96509, 172743, 289527, 403067, 978877, 1209201, 2936631, 6852139, 20556417]

約数ペア:

[(1, 20556417), (3, 6852139), (7, 2936631), (17, 1209201), (21, 978877), (51, 403067), (71, 289527), (119, 172743), (213, 96509), (357, 57581), (497, 41361), (811, 25347), (1207, 17031), (1491, 13787), (2433, 8449), (3621, 5677)]